internal/rosa/azalea: implement semicolon and comma insertion

internal/rosa/azalea/azalea.go

@@ -4,9 +4,7 @@ package azalea
 
 import (
 	"errors"
-	"fmt"
 	"io"
-	"os"
 	"strconv"
 	"strings"
 	"text/scanner"
@@ -428,6 +426,5 @@ func insertSemicolons(r io.Reader) (io.Reader, error) {
 
 		tok = s.Scan()
 	}
-	fmt.Fprintln(os.Stderr, buf.String())
 	return strings.NewReader(buf.String()), nil
 }